https://blog.wongcw.com/2021/03/30/canalys%e8%ad%a6%e5%91%8a%ef%bc%9a%e6%9c%aa%e8%83%bd%e5%9c%a8%e7%b6%b2%e7%b5%a1%e5%ae%89%e5%85%a8%e4%b8%8a%e6%8a%95%e5%85%a5%e6%9b%b4%e5%a4%9a%e8%b3%87%e9%87%91%e7%9a%84%e4%bc%81%e6%a5%ad%e5%b0%87/